Originally Posted by
Northstar
It's the concrete goal-orientedness of Se combined with Ti, no matter in which order they are in the ego block.
HA is something you actively try and fail to get, DS is what you need the most but don't even realize it. With enough Socionics knowledge the line becomes somewhat blurred because you are aware of both the DS and the HA.
LSI with Ni HA could believe that they can predict consequences, avoid mistakes and be visionary but actually suck pretty badly at it. Ni DS of SLE means that in the single-minded pushing through obstacles to reach a goal there isn't even a thought given to considering the consequences.